Rector-Elements - Dysprosim

Dysprosium

Name of the element and how it got its name:Dysprosium.It got its name from the Greek word 'dysprositos' meaning hard to get at.
Who discovered it ? Lecoq de Boisbaudran
When was it discovered ? 1886
Symbol: Dy
Atomic number:66
Atomic mass:162.50
Source/origin of the symbol: From the Greek word dysprositos (hard to get at)
Number of protons:66
Neutrons: 96.50
Electrons:96.50
Where it is found (air, water, land): From in many minerals.The most important ores(minerals that have been mined) are monazite and bastnasite.
In what form (state of matter-solid,liquid,gas):Solid
Physical facts:Dysprosium is a bright silver. Because its a salt it is greenish yellow.Its stable at room temperature but in moist air it tarnishes.
Melting point:1413 °C
Boiling point:2567 °C
Density:293 K:8.536 g/cm3
Abundance in the Earth crust ( crust includes air,water, and land)
Uses (how is the element used):Metallurgy. Its used in lasers when mixed with other elements.Used when doing chemical reactions , and is in CD disks.
Interesting facts:Most of Dysprosium is mostly mined from clay ores in Southern China. When it delutes with mineral acids,hydrogen is emitted.

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